A decorative relief pattern is applied to one or both sides of thermoplastic slat material by rolling an embossing roller in contact with the side(s) to receive the pattern. The embossing roller has an inverse relief pattern which is an inverse of the relief pattern applied to the slat material. A transfer...http://www.google.es/patents/US6668715?utm_source=gb-gplus-sharePatente US6668715 - Method and apparatus for simultaneously embossing and printing an extruded plastic slat
Method and apparatus for simultaneously embossing and printing an extruded ...
